Last time I checked, the 1901 wasn't much more expensive, and from what I've read, the phenolic body does make a difference in fuel bowl temperatures. I think I'd go for the 1901 if I were buying a new one, but I haven't used it myself.
thank-you, on holley there the same price , i can get a discount (about $40) ordering it from advance auto parts with codes and discounts but i can't get the 1901 just the 1900, but i'm in arkansas so guess it be worth it
